How to bind to a property of the ViewModel from within a GridView

Question

I'm using the MVVM design pattern, and the DataContext of my View is set to a ViewModel.

In my View, I have a ListView/GridView with ItemsSource bound to a DataTable. One of the GridViewColumns has a CellTemplate that presents a Button. I want the IsEnabled property of the button to be bound to the SelectButtonsEnabled property of my ViewModel.

Using IsEnabled="{Binding Path=SelectButtonsEnabled}" doesn't work because my DataTable doesn't have a column named "SelectButtonsEnabled". The property I'm trying to bind to is global for the whole ViewModel, not specific to a row of the DataTable.

I think I need some kind of RelativeSource tag, but all my attempts thus far have failed.

Thanks.

Answer 1

Well, I don't know if this is the most succinct way to do it, but this works:

IsEnabled="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ListView}}, Path=DataContext.SelectButtonsEnabled}"